3 * Laconica - a distributed open-source microblogging tool
4 * Copyright (C) 2008, Controlez-Vous, Inc.
6 * This program is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU Affero General Public License as published by
8 * the Free Software Foundation, either version 3 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU Affero General Public License for more details.
16 * You should have received a copy of the GNU Affero General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
20 /* XXX: break up into separate modules (HTTP, HTML, user, files) */
24 function common_server_error($msg, $code=500) {
25 static $status = array(500 => 'Internal Server Error',
26 501 => 'Not Implemented',
28 503 => 'Service Unavailable',
29 504 => 'Gateway Timeout',
30 505 => 'HTTP Version Not Supported');
32 if (!array_key_exists($code, $status)) {
36 $status_string = $status[$code];
38 header('HTTP/1.1 '.$code.' '.$status_string);
39 header('Content-type: text/plain');
47 function common_user_error($msg, $code=400) {
48 static $status = array(400 => 'Bad Request',
49 401 => 'Unauthorized',
50 402 => 'Payment Required',
53 405 => 'Method Not Allowed',
54 406 => 'Not Acceptable',
55 407 => 'Proxy Authentication Required',
56 408 => 'Request Timeout',
59 411 => 'Length Required',
60 412 => 'Precondition Failed',
61 413 => 'Request Entity Too Large',
62 414 => 'Request-URI Too Long',
63 415 => 'Unsupported Media Type',
64 416 => 'Requested Range Not Satisfiable',
65 417 => 'Expectation Failed');
67 if (!array_key_exists($code, $status)) {
71 $status_string = $status[$code];
73 header('HTTP/1.1 '.$code.' '.$status_string);
75 common_show_header('Error');
76 common_element('div', array('class' => 'error'), $msg);
82 # Start an HTML element
83 function common_element_start($tag, $attrs=NULL) {
85 $xw->startElement($tag);
86 if (is_array($attrs)) {
87 foreach ($attrs as $name => $value) {
88 $xw->writeAttribute($name, $value);
90 } else if (is_string($attrs)) {
91 $xw->writeAttribute('class', $attrs);
95 function common_element_end($tag) {
96 static $empty_tag = array('base', 'meta', 'link', 'hr',
97 'br', 'param', 'img', 'area',
100 # XXX: check namespace
101 if (in_array($tag, $empty_tag)) {
104 $xw->fullEndElement();
108 function common_element($tag, $attrs=NULL, $content=NULL) {
109 common_element_start($tag, $attrs);
114 common_element_end($tag);
117 function common_start_xml($doc=NULL, $public=NULL, $system=NULL) {
119 $xw = new XMLWriter();
120 $xw->openURI('php://output');
121 $xw->setIndent(true);
122 $xw->startDocument('1.0', 'UTF-8');
124 $xw->writeDTD($doc, $public, $system);
128 function common_end_xml() {
134 define('PAGE_TYPE_PREFS', 'text/html,application/xhtml+xml,application/xml;q=0.3,text/xml;q=0.2');
136 function common_show_header($pagetitle, $callable=NULL, $data=NULL, $headercall=NULL) {
139 $httpaccept = isset($_SERVER['HTTP_ACCEPT']) ? $_SERVER['HTTP_ACCEPT'] : NULL;
141 # XXX: allow content negotiation for RDF, RSS, or XRDS
143 $type = common_negotiate_type(common_accept_to_prefs($httpaccept),
144 common_accept_to_prefs(PAGE_TYPE_PREFS));
147 common_user_error(_t('This page is not available in a media type you accept'), 406);
151 header('Content-Type: '.$type);
153 common_start_xml('html',
154 '-//W3C//DTD XHTML 1.0 Strict//EN',
155 'http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd');
157 # FIXME: correct language for interface
159 common_element_start('html', array('xmlns' => 'http://www.w3.org/1999/xhtml',
163 common_element_start('head');
164 common_element('title', NULL,
165 $pagetitle . " - " . $config['site']['name']);
166 common_element('link', array('rel' => 'stylesheet',
167 'type' => 'text/css',
168 'href' => theme_path('display.css'),
169 'media' => 'screen, projection, tv'));
170 foreach (array(6,7) as $ver) {
171 if (file_exists(theme_file('ie'.$ver.'.css'))) {
172 # Yes, IE people should be put in jail.
173 $xw->writeComment('[if lte IE '.$ver.']><link rel="stylesheet" type="text/css" '.
174 'href="'.theme_path('ie'.$ver.'.css').'" /><![endif]');
178 common_element('script', array('type' => 'text/javascript',
179 'src' => common_path('js/jquery.min.js')),
181 common_element('script', array('type' => 'text/javascript',
182 'src' => common_path('js/util.js')),
187 call_user_func($callable, $data);
189 call_user_func($callable);
192 common_element_end('head');
193 common_element_start('body');
194 common_element_start('div', array('id' => 'wrap'));
195 common_element_start('div', array('id' => 'header'));
197 if ((is_string($config['site']['logo']) && (strlen($config['site']['logo']) > 0))
198 || file_exists(theme_file('logo.png')))
200 common_element_start('a', array('href' => common_local_url('public')));
201 common_element('img', array('src' => ($config['site']['logo']) ?
202 ($config['site']['logo']) : theme_path('logo.png'),
203 'alt' => $config['site']['name'],
205 common_element_end('a');
207 common_element_start('p', array('id' => 'branding'));
208 common_element('a', array('href' => common_local_url('public')),
209 $config['site']['name']);
210 common_element_end('p');
213 common_element('h1', 'pagetitle', $pagetitle);
217 call_user_func($headercall, $data);
219 call_user_func($headercall);
222 common_element_end('div');
223 common_element_start('div', array('id' => 'content'));
226 function common_show_footer() {
228 common_element_end('div'); # content div
230 common_element_start('div', array('id' => 'footer'));
231 common_element_start('div', 'laconica');
232 if (common_config('site', 'broughtby')) {
233 $instr = _t('**%%site.name%%** is a microblogging service brought to you by [%%site.broughtby%%](%%site.broughtbyurl%%). ');
235 $instr = _t('**%%site.name%%** is a microblogging service. ');
237 $instr .= _t('It runs the [Laconica](http://laconi.ca/) ' .
238 'microblogging software, version ' . LACONICA_VERSION . ', ' .
239 'available under the ' .
240 '[GNU Affero General Public License]' .
241 '(http://www.fsf.org/licensing/licenses/agpl-3.0.html).');
242 $output = common_markup_to_html($instr);
244 common_element_end('div');
245 common_element('img', array('id' => 'cc',
246 'src' => $config['license']['image'],
247 'alt' => $config['license']['title']));
248 common_element_start('p');
249 common_text(_t('Unless otherwise specified, contents of this site are copyright by the contributors and available under the '));
250 common_element('a', array('class' => 'license',
252 href => $config['license']['url']),
253 $config['license']['title']);
254 common_text(_t('. Contributors should be attributed by full name or nickname.'));
255 common_element_end('p');
256 common_element_end('div');
257 common_element_end('div');
258 common_element_end('body');
259 common_element_end('html');
263 function common_text($txt) {
268 function common_raw($xml) {
273 function common_nav_menu() {
274 $user = common_current_user();
275 common_element_start('ul', array('id' => 'nav'));
277 common_menu_item(common_local_url('all', array('nickname' => $user->nickname)),
280 common_menu_item(common_local_url('public'), _t('Public'));
281 common_menu_item(common_local_url('doc', array('title' => 'help')),
284 common_menu_item(common_local_url('profilesettings'),
286 common_menu_item(common_local_url('logout'),
289 common_menu_item(common_local_url('login'), _t('Login'));
290 common_menu_item(common_local_url('register'), _t('Register'));
291 common_menu_item(common_local_url('openidlogin'), _t('OpenID'));
293 common_element_end('ul');
296 function common_foot_menu() {
297 common_element_start('ul', array('id' => 'nav_sub'));
298 common_menu_item(common_local_url('doc', array('title' => 'about')),
300 common_menu_item(common_local_url('doc', array('title' => 'faq')),
302 common_menu_item(common_local_url('doc', array('title' => 'privacy')),
304 common_menu_item(common_local_url('doc', array('title' => 'source')),
306 common_menu_item(common_local_url('doc', array('title' => 'contact')),
308 common_element_end('ul');
311 function common_menu_item($url, $text, $title=NULL, $is_selected=false) {
314 $lattrs['class'] = 'current';
316 common_element_start('li', $lattrs);
317 $attrs['href'] = $url;
319 $attrs['title'] = $title;
321 common_element('a', $attrs, $text);
322 common_element_end('li');
325 function common_input($id, $label, $value=NULL,$instructions=NULL) {
326 common_element_start('p');
327 common_element('label', array('for' => $id), $label);
328 $attrs = array('name' => $id,
330 'class' => 'input_text',
333 $attrs['value'] = htmlspecialchars($value);
335 common_element('input', $attrs);
337 common_element('span', 'input_instructions', $instructions);
339 common_element_end('p');
342 function common_checkbox($id, $label, $checked=false, $instructions=NULL, $value='true')
344 common_element_start('p');
345 $attrs = array('name' => $id,
346 'type' => 'checkbox',
347 'class' => 'checkbox',
350 $attrs['value'] = htmlspecialchars($value);
353 $attrs['checked'] = 'checked';
355 common_element('input', $attrs);
358 common_element('span', 'checkbox_label', $label);
361 common_element('span', 'input_instructions', $instructions);
363 common_element_end('p');
366 function common_hidden($id, $value) {
367 common_element('input', array('name' => $id,
373 function common_password($id, $label, $instructions=NULL) {
374 common_element_start('p');
375 common_element('label', array('for' => $id), $label);
376 $attrs = array('name' => $id,
377 'type' => 'password',
378 'class' => 'password',
380 common_element('input', $attrs);
382 common_element('span', 'input_instructions', $instructions);
384 common_element_end('p');
387 function common_submit($id, $label) {
389 common_element_start('p');
390 common_element('input', array('type' => 'submit',
395 common_element_end('p');
398 function common_textarea($id, $label, $content=NULL, $instructions=NULL) {
399 common_element_start('p');
400 common_element('label', array('for' => $id), $label);
401 common_element('textarea', array('rows' => 3,
405 ($content) ? $content : '');
407 common_element('span', 'input_instructions', $instructions);
409 common_element_end('p');
412 # salted, hashed passwords are stored in the DB
414 function common_munge_password($password, $id) {
415 return md5($password . $id);
418 # check if a username exists and has matching password
419 function common_check_user($nickname, $password) {
420 $user = User::staticGet('nickname', $nickname);
421 if (is_null($user)) {
424 if (0 == strcmp(common_munge_password($password, $user->id),
433 # is the current user logged in?
434 function common_logged_in() {
435 return (!is_null(common_current_user()));
438 function common_have_session() {
439 return (0 != strcmp(session_id(), ''));
442 function common_ensure_session() {
443 if (!common_have_session()) {
448 # Three kinds of arguments:
453 function common_set_user($user) {
454 if (is_null($user) && common_have_session()) {
455 unset($_SESSION['userid']);
457 } else if (is_string($user)) {
459 $user = User::staticGet('nickname', $nickname);
460 } else if (!($user instanceof User)) {
465 common_ensure_session();
466 $_SESSION['userid'] = $user->id;
472 function common_set_cookie($key, $value, $expiration=0) {
473 $path = common_config('site', 'path');
474 $server = common_config('site', 'server');
476 if ($path && ($path != '/')) {
477 $cookiepath = '/' . $path . '/';
481 return setcookie($key,
488 define('REMEMBERME', 'rememberme');
489 define('REMEMBERME_EXPIRY', 30 * 24 * 60 * 60);
491 function common_rememberme($user=NULL) {
493 $user = common_current_user();
495 common_debug('No current user to remember', __FILE__);
499 $rm = new Remember_me();
500 $rm->code = common_good_rand(16);
501 $rm->user_id = $user->id;
502 $result = $rm->insert();
504 common_log_db_error($rm, 'INSERT', __FILE__);
505 common_debug('Error adding rememberme record for ' . $user->nickname, __FILE__);
508 common_log(LOG_INFO, 'adding rememberme cookie for ' . $user->nickname);
509 common_set_cookie(REMEMBERME,
510 implode(':', array($rm->user_id, $rm->code)),
511 time() + REMEMBERME_EXPIRY);
515 function common_remembered_user() {
518 $packed = $_COOKIE[REMEMBERME];
520 list($id, $code) = explode(':', $packed);
522 $rm = Remember_me::staticGet($code);
523 if ($rm && ($rm->user_id == $id)) {
524 $user = User::staticGet($rm->user_id);
527 $result = $rm->delete();
529 common_log_db_error($rm, 'DELETE', __FILE__);
532 common_log(LOG_INFO, 'logging in ' . $user->nickname . ' using rememberme code ' . $rm->code);
533 common_set_user($user->nickname);
534 common_real_login(false);
535 # We issue a new cookie, so they can log in
536 # automatically again after this session
537 common_rememberme($user);
546 # must be called with a valid user!
548 function common_forgetme() {
549 common_set_cookie(REMEMBERME, '', 0);
552 # who is the current user?
553 function common_current_user() {
554 if ($_REQUEST[session_name()]) {
555 common_ensure_session();
556 $id = $_SESSION['userid'];
558 # note: this should cache
559 $user = User::staticGet($id);
563 # that didn't work; try to remember
564 $user = common_remembered_user();
568 # Logins that are 'remembered' aren't 'real' -- they're subject to
569 # cookie-stealing. So, we don't let them do certain things. New reg,
570 # OpenID, and password logins _are_ real.
572 function common_real_login($real=true) {
573 common_ensure_session();
574 $_SESSION['real_login'] = $real;
577 function common_is_real_login() {
578 return common_logged_in() && $_SESSION['real_login'];
581 # get canonical version of nickname for comparison
582 function common_canonical_nickname($nickname) {
583 # XXX: UTF-8 canonicalization (like combining chars)
584 return strtolower($nickname);
587 # get canonical version of email for comparison
588 function common_canonical_email($email) {
589 # XXX: canonicalize UTF-8
590 # XXX: lcase the domain part
594 define('URL_REGEX', '^|[ \t\r\n])((ftp|http|https|gopher|mailto|news|nntp|telnet|wais|file|prospero|aim|webcal):(([A-Za-z0-9$_.+!*(),;/?:@&~=-])|%[A-Fa-f0-9]{2}){2,}(#([a-zA-Z0-9][a-zA-Z0-9$_.+!*(),;/?:@&~=%-]*))?([A-Za-z0-9$_+!*();/?:~-]))');
596 function common_render_content($text, $notice) {
597 $r = htmlspecialchars($text);
598 $id = $notice->profile_id;
599 $r = preg_replace('@https?://\S+@', '<a href="\0" class="extlink">\0</a>', $r);
600 $r = preg_replace('/(^|\s+)@([a-z0-9]{1,64})/e', "'\\1@'.common_at_link($id, '\\2')", $r);
606 function common_at_link($sender_id, $nickname) {
607 $sender = Profile::staticGet($sender_id);
608 $recipient = common_relative_profile($sender, $nickname);
610 return '<a href="'.htmlspecialchars($recipient->profileurl).'" class="atlink">'.$nickname.'</a>';
616 function common_relative_profile($sender, $nickname, $dt=NULL) {
617 # Try to find profiles this profile is subscribed to that have this nickname
618 $recipient = new Profile();
619 # XXX: use a join instead of a subquery
620 $recipient->whereAdd('EXISTS (SELECT subscribed from subscription where subscriber = '.$sender_id.' and subscribed = id)', 'AND');
621 $recipient->whereAdd('nickname = "' . trim($nickname) . '"', 'AND');
622 if ($recipient->find(TRUE)) {
623 # XXX: should probably differentiate between profiles with
624 # the same name by date of most recent update
627 # Try to find profiles that listen to this profile and that have this nickname
628 $recipient = new Profile();
629 # XXX: use a join instead of a subquery
630 $recipient->whereAdd('EXISTS (SELECT subscriber from subscription where subscribed = '.$sender_id.' and subscriber = id)', 'AND');
631 $recipient->whereAdd('nickname = "' . trim($nickname) . '"', 'AND');
632 if ($recipient->find(TRUE)) {
633 # XXX: should probably differentiate between profiles with
634 # the same name by date of most recent update
637 # If this is a local user, try to find a local user with that nickname.
638 $sender = User::staticGet($sender->id);
640 $recipient_user = User::staticGet('nickname', $nickname);
641 if ($recipient_user) {
642 return $recipient_user->getProfile();
645 # Otherwise, no links. @messages from local users to remote users,
646 # or from remote users to other remote users, are just
647 # outside our ability to make intelligent guesses about
651 // where should the avatar go for this user?
653 function common_avatar_filename($id, $extension, $size=NULL, $extra=NULL) {
657 return $id . '-' . $size . (($extra) ? ('-' . $extra) : '') . $extension;
659 return $id . '-original' . (($extra) ? ('-' . $extra) : '') . $extension;
663 function common_avatar_path($filename) {
665 return INSTALLDIR . '/avatar/' . $filename;
668 function common_avatar_url($filename) {
669 return common_path('avatar/'.$filename);
672 function common_avatar_display_url($avatar) {
673 $server = common_config('avatar', 'server');
675 return 'http://'.$server.'/'.$avatar->filename;
681 function common_default_avatar($size) {
682 static $sizenames = array(AVATAR_PROFILE_SIZE => 'profile',
683 AVATAR_STREAM_SIZE => 'stream',
684 AVATAR_MINI_SIZE => 'mini');
685 return theme_path('default-avatar-'.$sizenames[$size].'.png');
688 function common_local_url($action, $args=NULL) {
690 if ($config['site']['fancy']) {
691 return common_fancy_url($action, $args);
693 return common_simple_url($action, $args);
697 function common_fancy_url($action, $args=NULL) {
698 switch (strtolower($action)) {
700 if ($args && $args['page']) {
701 return common_path('?page=' . $args['page']);
703 return common_path('');
706 return common_path('rss');
708 return common_path('xrds');
710 return common_path('doc/'.$args['title']);
716 return common_path('main/'.$action);
717 case 'remotesubscribe':
718 if ($args && $args['nickname']) {
719 return common_path('main/remote?nickname=' . $args['nickname']);
721 return common_path('main/remote');
724 return common_path('main/openid');
727 return common_path('settings/'.$action);
728 case 'profilesettings':
729 return common_path('settings/profile');
730 case 'openidsettings':
731 return common_path('settings/openid');
733 if ($args && $args['replyto']) {
734 return common_path('notice/new?replyto='.$args['replyto']);
736 return common_path('notice/new');
739 return common_path('notice/'.$args['notice']);
742 return common_path($args['nickname'].'/'.$action);
743 case 'subscriptions':
747 if ($args && $args['page']) {
748 return common_path($args['nickname'].'/'.$action.'?page=' . $args['page']);
750 return common_path($args['nickname'].'/'.$action);
753 return common_path($args['nickname'].'/all/rss');
755 return common_path($args['nickname'].'/replies/rss');
757 return common_path($args['nickname'].'/rss');
759 if ($args && $args['page']) {
760 return common_path($args['nickname'].'?page=' . $args['page']);
762 return common_path($args['nickname']);
764 case 'confirmaddress':
765 return common_path('main/confirmaddress/'.$args['code']);
767 return common_path('user/'.$args['id']);
768 case 'recoverpassword':
769 $path = 'main/recoverpassword';
771 $path .= '/' . $args['code'];
773 return common_path($path);
775 return common_path('settings/im');
777 return common_simple_url($action, $args);
781 function common_simple_url($action, $args=NULL) {
783 /* XXX: pretty URLs */
786 foreach ($args as $key => $value) {
787 $extra .= "&${key}=${value}";
790 return common_path("index.php?action=${action}${extra}");
793 function common_path($relative) {
795 $pathpart = ($config['site']['path']) ? $config['site']['path']."/" : '';
796 return "http://".$config['site']['server'].'/'.$pathpart.$relative;
799 function common_date_string($dt) {
800 // XXX: do some sexy date formatting
801 // return date(DATE_RFC822, $dt);
806 if ($now < $t) { # that shouldn't happen!
807 return common_exact_date($dt);
808 } else if ($diff < 60) {
809 return _t('a few seconds ago');
810 } else if ($diff < 92) {
811 return _t('about a minute ago');
812 } else if ($diff < 3300) {
813 return _t('about ') . round($diff/60) . _t(' minutes ago');
814 } else if ($diff < 5400) {
815 return _t('about an hour ago');
816 } else if ($diff < 22 * 3600) {
817 return _t('about ') . round($diff/3600) . _t(' hours ago');
818 } else if ($diff < 37 * 3600) {
819 return _t('about a day ago');
820 } else if ($diff < 24 * 24 * 3600) {
821 return _t('about ') . round($diff/(24*3600)) . _t(' days ago');
822 } else if ($diff < 46 * 24 * 3600) {
823 return _t('about a month ago');
824 } else if ($diff < 330 * 24 * 3600) {
825 return _t('about ') . round($diff/(30*24*3600)) . _t(' months ago');
826 } else if ($diff < 480 * 24 * 3600) {
827 return _t('about a year ago');
829 return common_exact_date($dt);
833 function common_exact_date($dt) {
835 return date(DATE_RFC850, $t);
838 function common_date_w3dtf($dt) {
840 return date(DATE_W3C, $t);
843 function common_redirect($url, $code=307) {
844 static $status = array(301 => "Moved Permanently",
847 307 => "Temporary Redirect");
848 header("Status: ${code} $status[$code]");
849 header("Location: $url");
851 common_start_xml('a',
852 '-//W3C//DTD XHTML 1.0 Strict//EN',
853 'http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd');
854 common_element('a', array('href' => $url), $url);
858 function common_save_replies($notice) {
859 # extract all @messages
860 $cnt = preg_match_all('/(?:^|\s)@([a-z0-9]{1,64})/', $notice->content, $match);
864 $sender = Profile::staticGet($notice->profile_id);
865 # store replied only for first @ (what user/notice what the reply directed,
866 # we assume first @ is it)
867 for ($i=0; $i<count($match[1]); $i++) {
868 $nickname = $match[1][$i];
869 $recipient = common_relative_profile($sender, $nickname, $notice->created);
874 $reply_for = $recipient;
876 $reply = new Reply();
877 $reply->notice_id = $notice->id;
878 $reply->profile_id = $recipient->id;
880 # $recipient_notice = $reply_for->getCurrentNotice($notice->created);
881 $recipient_notice = $reply_for->getCurrentNotice();
882 $reply->replied_id = $recipient_notice->id;
884 $id = $reply->insert();
886 $last_error = &PEAR::getStaticProperty('DB_DataObject','lastError');
887 common_log(LOG_ERROR, 'DB error inserting reply: ' . $last_error->message);
888 common_server_error('DB error inserting reply: ' . $last_error->message);
894 function common_broadcast_notice($notice, $remote=false) {
895 if (common_config('queue', 'enabled')) {
897 return common_enqueue_notice($notice);
899 return common_real_broadcast($notice, $remote);
903 # Stick the notice on the queue
905 function common_enqueue_notice($notice) {
906 $qi = new Queue_item();
907 $qi->notice_id = $notice->id;
908 $qi->created = $notice->created;
909 $result = $qi->insert();
911 $last_error = &PEAR::getStaticProperty('DB_DataObject','lastError');
912 common_log(LOG_ERROR, 'DB error inserting queue item: ' . $last_error->message);
915 common_log(LOG_DEBUG, 'complete queueing notice ID = ' . $notice->id);
919 function common_real_broadcast($notice, $remote=false) {
922 # Make sure we have the OMB stuff
923 require_once(INSTALLDIR.'/lib/omb.php');
924 $success = omb_broadcast_remote_subscribers($notice);
926 common_log(LOG_ERROR, 'Error in OMB broadcast for notice ' . $notice->id);
930 require_once(INSTALLDIR.'/lib/jabber.php');
931 $success = jabber_broadcast_notice($notice);
933 common_log(LOG_ERROR, 'Error in jabber broadcast for notice ' . $notice->id);
936 // XXX: broadcast notices to SMS
937 // XXX: broadcast notices to other IM
941 function common_broadcast_profile($profile) {
942 // XXX: optionally use a queue system like http://code.google.com/p/microapps/wiki/NQDQ
943 require_once(INSTALLDIR.'/lib/omb.php');
944 omb_broadcast_profile($profile);
945 // XXX: Other broadcasts...?
949 function common_profile_url($nickname) {
950 return common_local_url('showstream', array('nickname' => $nickname));
953 # Don't call if nobody's logged in
955 function common_notice_form($action=NULL, $content=NULL) {
956 $user = common_current_user();
957 assert(!is_null($user));
958 common_element_start('form', array('id' => 'status_form',
960 'action' => common_local_url('newnotice')));
961 common_element_start('p');
962 common_element('label', array('for' => 'status_textarea',
963 'id' => 'status_label'),
964 _t('What\'s up, ').$user->nickname.'?');
965 common_element('span', array('id' => 'counter', 'class' => 'counter'), '140');
966 common_element('textarea', array('id' => 'status_textarea',
969 'name' => 'status_textarea'),
970 ($content) ? $content : '');
972 common_hidden('returnto', $action);
974 common_element('input', array('id' => 'status_submit',
975 'name' => 'status_submit',
977 'value' => _t('Send')));
978 common_element_end('p');
979 common_element_end('form');
982 function common_mint_tag($extra) {
985 'tag:'.$config['tag']['authority'].','.
986 $config['tag']['date'].':'.$config['tag']['prefix'].$extra;
989 # Should make up a reasonable root URL
991 function common_root_url() {
992 return common_path('');
995 # returns $bytes bytes of random data as a hexadecimal string
996 # "good" here is a goal and not a guarantee
998 function common_good_rand($bytes) {
999 # XXX: use random.org...?
1000 if (file_exists('/dev/urandom')) {
1001 return common_urandom($bytes);
1002 } else { # FIXME: this is probably not good enough
1003 return common_mtrand($bytes);
1007 function common_urandom($bytes) {
1008 $h = fopen('/dev/urandom', 'rb');
1010 $src = fread($h, $bytes);
1013 for ($i = 0; $i < $bytes; $i++) {
1014 $enc .= sprintf("%02x", (ord($src[$i])));
1019 function common_mtrand($bytes) {
1021 for ($i = 0; $i < $bytes; $i++) {
1022 $enc .= sprintf("%02x", mt_rand(0, 255));
1027 function common_set_returnto($url) {
1028 common_ensure_session();
1029 $_SESSION['returnto'] = $url;
1032 function common_get_returnto() {
1033 common_ensure_session();
1034 return $_SESSION['returnto'];
1037 function common_timestamp() {
1038 return date('YmdHis');
1041 // XXX: set up gettext
1047 function common_ensure_syslog() {
1048 static $initialized = false;
1049 if (!$initialized) {
1051 define_syslog_variables();
1052 openlog($config['syslog']['appname'], 0, LOG_USER);
1053 $initialized = true;
1057 function common_log($priority, $msg, $filename=NULL) {
1058 common_ensure_syslog();
1059 syslog($priority, $msg);
1062 function common_debug($msg, $filename=NULL) {
1064 common_log(LOG_DEBUG, basename($filename).' - '.$msg);
1066 common_log(LOG_DEBUG, $msg);
1070 function common_log_db_error(&$object, $verb, $filename=NULL) {
1071 $objstr = common_log_objstring($object);
1072 $last_error = &PEAR::getStaticProperty('DB_DataObject','lastError');
1073 common_log(LOG_ERR, $last_error->message . '(' . $verb . ' on ' . $objstr . ')', $filename);
1076 function common_log_objstring(&$object) {
1077 if (is_null($object)) {
1080 $arr = $object->toArray();
1082 foreach ($arr as $k => $v) {
1083 $fields[] = "$k='$v'";
1085 $objstring = $object->tableName() . '[' . implode(',', $fields) . ']';
1089 function common_valid_http_url($url) {
1090 return Validate::uri($url, array('allowed_schemes' => array('http', 'https')));
1093 function common_valid_tag($tag) {
1094 if (preg_match('/^tag:(.*?),(\d{4}(-\d{2}(-\d{2})?)?):(.*)$/', $tag, $matches)) {
1095 return (Validate::email($matches[1]) ||
1096 preg_match('/^([\w-\.]+)$/', $matches[1]));
1101 # Does a little before-after block for next/prev page
1103 function common_pagination($have_before, $have_after, $page, $action, $args=NULL) {
1105 if ($have_before || $have_after) {
1106 common_element_start('div', array('id' => 'pagination'));
1107 common_element_start('ul', array('id' => 'nav_pagination'));
1111 $pargs = array('page' => $page-1);
1112 $newargs = ($args) ? array_merge($args,$pargs) : $pargs;
1114 common_element_start('li', 'before');
1115 common_element('a', array('href' => common_local_url($action, $newargs)),
1117 common_element_end('li');
1121 $pargs = array('page' => $page+1);
1122 $newargs = ($args) ? array_merge($args,$pargs) : $pargs;
1123 common_element_start('li', 'after');
1124 common_element('a', array('href' => common_local_url($action, $newargs)),
1126 common_element_end('li');
1129 if ($have_before || $have_after) {
1130 common_element_end('ul');
1131 common_element_end('div');
1135 /* Following functions are copied from MediaWiki GlobalFunctions.php
1136 * and written by Evan Prodromou. */
1138 function common_accept_to_prefs($accept, $def = '*/*') {
1139 # No arg means accept anything (per HTTP spec)
1141 return array($def => 1);
1146 $parts = explode(',', $accept);
1148 foreach($parts as $part) {
1149 # FIXME: doesn't deal with params like 'text/html; level=1'
1150 @list($value, $qpart) = explode(';', $part);
1152 if(!isset($qpart)) {
1154 } elseif(preg_match('/q\s*=\s*(\d*\.\d+)/', $qpart, $match)) {
1155 $prefs[$value] = $match[1];
1162 function common_mime_type_match($type, $avail) {
1163 if(array_key_exists($type, $avail)) {
1166 $parts = explode('/', $type);
1167 if(array_key_exists($parts[0] . '/*', $avail)) {
1168 return $parts[0] . '/*';
1169 } elseif(array_key_exists('*/*', $avail)) {
1177 function common_negotiate_type($cprefs, $sprefs) {
1180 foreach(array_keys($sprefs) as $type) {
1181 $parts = explode('/', $type);
1182 if($parts[1] != '*') {
1183 $ckey = common_mime_type_match($type, $cprefs);
1185 $combine[$type] = $sprefs[$type] * $cprefs[$ckey];
1190 foreach(array_keys($cprefs) as $type) {
1191 $parts = explode('/', $type);
1192 if($parts[1] != '*' && !array_key_exists($type, $sprefs)) {
1193 $skey = common_mime_type_match($type, $sprefs);
1195 $combine[$type] = $sprefs[$skey] * $cprefs[$type];
1201 $besttype = "text/html";
1203 foreach(array_keys($combine) as $type) {
1204 if($combine[$type] > $bestq) {
1206 $bestq = $combine[$type];
1213 function common_config($main, $sub) {
1215 return $config[$main][$sub];
1218 function common_copy_args($from) {
1220 $strip = get_magic_quotes_gpc();
1221 foreach ($from as $k => $v) {
1222 $to[$k] = ($strip) ? stripslashes($v) : $v;
1227 function common_user_uri(&$user) {
1228 return common_local_url('userbyid', array('id' => $user->id));
1231 function common_notice_uri(&$notice) {
1232 return common_local_url('shownotice',
1233 array('notice' => $notice->id));
1236 # 36 alphanums - lookalikes (0, O, 1, I) = 32 chars = 5 bits
1238 function common_confirmation_code($bits) {
1239 # 36 alphanums - lookalikes (0, O, 1, I) = 32 chars = 5 bits
1240 static $codechars = '23456789ABCDEFGHJKLMNPQRSTUVWXYZ';
1241 $chars = ceil($bits/5);
1243 for ($i = 0; $i < $chars; $i++) {
1244 # XXX: convert to string and back
1245 $num = hexdec(common_good_rand(1));
1246 # XXX: randomness is too precious to throw away almost
1247 # 40% of the bits we get!
1248 $code .= $codechars[$num%32];
1253 # convert markup to HTML
1255 function common_markup_to_html($c) {
1256 $c = preg_replace('/%%action.(\w+)%%/e', "common_local_url('\\1')", $c);
1257 $c = preg_replace('/%%doc.(\w+)%%/e', "common_local_url('doc', array('title'=>'\\1'))", $c);
1258 $c = preg_replace('/%%(\w+).(\w+)%%/e', 'common_config(\'\\1\', \'\\2\')', $c);
1259 return Markdown($c);